Signed-off-by: Alexey Starikovskiy <astarikovskiy@xxxxxxx>
---
drivers/acpi/ec.c | 15 +++++++++++++--
1 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 69f5f78..f9c0782 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -300,6 +300,18 @@ static int ec_check_ibf0(struct acpi_ec *ec)
return (status & ACPI_EC_FLAG_IBF) == 0;
}
+static int ec_wait_ibf0(struct acpi_ec *ec)
+{
+ unsigned long delay = jiffies + msecs_to_jiffies(ACPI_EC_DELAY);
+ /* interrupt wait manually if GPE mode is not active */
+ unsigned long timeout = test_bit(EC_FLAGS_GPE_MODE, &ec->flags) ?
+ msecs_to_jiffies(ACPI_EC_DELAY) : msecs_to_jiffies(1);
+ while (time_before(jiffies, delay))
+ if (wait_event_timeout(ec->wait, ec_check_ibf0(ec), timeout))
+ return 0;
+ return -ETIME;
+}
+
static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t,
int force_poll)
{
@@ -317,8 +329,7 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t,
goto unlock;
}
}
- if (!wait_event_timeout(ec->wait, ec_check_ibf0(ec),
- msecs_to_jiffies(ACPI_EC_DELAY))) {
+ if (ec_wait_ibf0(ec)) {
pr_err(PREFIX "input buffer is not empty, "
"aborting transaction\n");
status = -ETIME;
--
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